Submission #244379

#	Time	Username	Problem	Language	Result	Execution time	Memory
244379		Vimmer	Pick (COI18_pick)	C++14	100 / 100	6 ms	384 KiB

pick

#include <bits/stdc++.h>
//#include <ext/pb_ds/assoc_container.hpp>
//#include <ext/pb_ds/tree_policy.hpp>

//#pragma GCC optimize("unroll-loops")
//#pragma GCC optimize("-O3")
//#pragma GCC optimize("Ofast")
//#pragma GCC optimize("fast-math")
//#pragma GCC optimize("no-stack-protector")

#define F first
#define S second
#define sz(x) int(x.size())
#define pb push_back
#define N 101001
#define M ll(998244353)
#define inf 1e9 + 1e9


using namespace std;
//using namespace __gnu_pbds;

typedef long double ld;
typedef long long ll;
typedef short int si;
typedef array <int, 3> a3;

//typedef tree <int, null_type, less_equal<int>, rb_tree_tag, tree_order_statistics_node_update> ordered_set;

vector <pair <int, int> > vr;

int main()
{
    //freopen("input.txt", "r", stdin); //freopen("output4.txt", "w", stdout);

    ios_base::sync_with_stdio(0); istream::sync_with_stdio(0); cin.tie(0); cout.tie(0);

        bool f1 = 0, f2 = 0;
    int a, b, c, d;

    cin >> a >> b >> c >> d;

    if (c + d == 0)
    {
        int x = 0, y = 0;

        cout << 0 << " " << 0 << endl;

        for (int i = 0; i < a / 2; i++) {x++; cout << x << " " << y << endl;}

        y++; cout << x << " " << y << endl;

        for (int i = 0; i < a / 2 - 1; i++) {x--; cout << x << " " << y << endl;}

        for (int i = 0; i < b / 2 - 1; i++) {y++; cout << x << " " << y << endl;}

        x--; cout << x << " " << y << endl;

        for (int i = 0; i < b / 2 - 1; i++) {y--; cout << x << " " << y << endl;}

        exit(0);
    }
    else if (a + b == 0)
    {
        cout << 0 << " " << 0 << endl;

        int x = 0, y = 0;

        for (int i = 0; i < c / 2; i++)
        {
            x++; y++;

            cout << x << " " << y << endl;
        }

        x--; y++;

        cout << x << " " << y << endl;

        for (int i = 0; i < c / 2 - 1; i++)
        {
            x--; y--;

            cout << x << " " << y << endl;
        }

        for (int i = 0; i < d / 2 - 1; i++)
        {
            x--; y++;

            cout << x << " " << y << endl;
        }

        x--; y--;

        cout << x << " " << y << endl;

        for (int i = 1; i < d / 2; i++)
        {
            x++; y--;

            cout << x << " " << y << endl;
        }

        exit(0);
    }
    else
    {

        if (a == 0)  {f1 = 1; swap(a, b);}

        if (c == 0)  {f2 = 1; swap(c, d);}

        if (c != 0 && d != 0 && c%2 == 0) {f2 = 1; swap(c, d);}

        int x = 0, y = 0;

        if (a % 2 == 0 && b % 2 == 0 && c % 2 == 0 && d % 2 == 0)
        {


            for (int i = 0; i < a / 2; i++) {vr.pb({x, y});x++;  }
vr.pb({x, y});
            x++; y++;



            for (int i = 0; i < b / 2; i++) {vr.pb({x, y});y++; }

            for (int i = 0; i < c / 2 - 1; i++) {vr.pb({x, y}); x++; y++; }

            for (int i = 0; i < d / 2; i++) {vr.pb({x, y});x--; y++; }
vr.pb({x, y});

            x--;




            for (int i = 0; i < d / 2; i++){vr.pb({x, y});x++; y--;  }

            for (int i = 0; i < c / 2 - 1; i++) {vr.pb({x, y});x--; y--;  }

            for (int i = 0; i < b / 2; i++) {vr.pb({x, y});y--; }

            for (int i = 0; i < a / 2 - 1; i++) {vr.pb({x, y});x--;  }

vr.pb({x, y});
            x--; y--;


        } else if (a % 2 == 0 && b % 2 == 0 && c % 2 == 1 && d % 2 == 1)
        {
            for (int i = 0; i < (a - 2) / 2; i++) {vr.pb({x, y});x++;  }
vr.pb({x, y});

            x++; y++;


            for (int i = 0; i < b / 2; i++) {vr.pb({x, y});y++; }

            for (int i = 0; i < (c - 1) / 2; i++) { vr.pb({x, y});x++; y++; }

            for (int i = 0; i < (d - 1) / 2; i++) {vr.pb({x, y});x--; y++;  }
vr.pb({x, y});
            x--;



            for (int i = 0; i < (d - 1) / 2; i++){vr.pb({x, y});x++; y--;  }

            for (int i = 0; i < (c - 1) / 2; i++) {vr.pb({x, y});x--; y--; }


            for (int i = 0; i < b / 2; i++) {vr.pb({x, y});y--; }

            for (int i = 0; i < (a - 2) / 2; i++) {vr.pb({x, y});x--; }

vr.pb({x, y});
            x--;

vr.pb({x, y});

            x++; y--;


        } else if (a % 2 == 1 && b % 2 == 1 && c % 2 == 1 && d % 2 == 0)
        {
            for (int i = 0; i < (a - 1) / 2; i++) {vr.pb({x, y});x++;  }

vr.pb({x, y});
            x++; y++;


            for (int i = 0; i < (b - 1) / 2; i++) {vr.pb({x, y});y++; }

            for (int i = 0; i < (c - 1) / 2; i++) {vr.pb({x, y}); x++; y++; }

            for (int i = 0; i < d / 2; i++) {vr.pb({x, y});x--; y++; }

vr.pb({x, y});
            x--;


            for (int i = 0; i < d / 2; i++){vr.pb({x, y});x++; y--;  }

            for (int i = 0; i < (c - 1) / 2; i++) {vr.pb({x, y});x--; y--; }

            for (int i = 0; i < (b - 1) / 2; i++) {vr.pb({x, y});y--; }

            for (int i = 0; i < (a - 1) / 2; i++) {vr.pb({x, y});x--; }
vr.pb({x, y});

            y--;

        }
    }

    if (f1) for (int i = 0; i < sz(vr); i++) swap(vr[i].F, vr[i].S);

    if (f2) for (int i = 0; i < sz(vr); i++) vr[i].S = -vr[i].S;

    for (auto it : vr) cout << it.F << " " << it.S << endl;
}

• Subtask 1: 5 / 5
• Subtask 2: 5 / 5
• Subtask 3: 10 / 10
• Subtask 4: 10 / 10
• Subtask 5: 10 / 10
• Subtask 6: 10 / 10
• Subtask 7: 10 / 10
• Subtask 8: 10 / 10
• Subtask 9: 10 / 10
• Subtask 10: 20 / 20